Does the following text have an inappropriate shift in verb tense? If so, fix any verbs that don't match the tense of the verb in bold. If not, submit the text without making any changes.

the
photovoltaic
cells
in
solar
panelsuse
energy
from
absorbed
light
to
knock
electrons
in
the
cells
loose
Electric
fields
in
the
cells
then
directed
the
electrons
in
a
particular
direction
creating
a
flow
of
electricity